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Now you are familiar with the user interface of the keys of your Milestone 312 Ace.
In addition to the aforementioned buttons there is a small indentation in the upper left corner for
the red LED.
On the top Left edge of the Milestone is the sixth and last button, the "Selector". This key is
narrow and protrudes from the device. In the middle of the top side is an elongated opening. This
is the USB port. The cable is connected here for connection to a computer. To charge the battery
of your milestone, connect the charging cable to this port. Far right on the top edge you will find
the connector for external microphones and line-in connections.
On the lower side is the headphone jack.
On the right lateral side of the device you will find a slot. This opening is the slot for SD cards, for
expanding the storage space.
Milestone has jacks for headphones, external microphone, USB cable and SD memory cards. The
following sections describe the various ports in detail.
2.2.2 Charging the battery
Please connect the charger to an AC outlet and the other end of the cable to the mini-USB port
which is located on the top edge of your Milestone. If Milestone is properly connected, the start of
the charging process is confirmed by a low beep. While charging the battery, the LED lamp
flashes at 3-second intervals. Charging takes up to 3 hours. You can retrieve the battery level and
other information via "information service". To find out more, see the section "Information
Service".
Please note that the battery is also charged while the device is connected via USB cable to a
computer.
Your Milestone is equipped with a powerful rechargeable lithium polymer battery, which retains
power in standby mode for several weeks without recharging or allows continuous operation of
up to 20 hours. This value is reached when listening to music or books on headphones with
normal playback speed and medium volume. Please note that playback via the built-in speaker
requires more energy. Also high playback speeds, high volume and playing text files require more
energy and consequently result in a shorter running time per battery charge cycle.
2.2.3 Connecting Headphones
If you do not want to hear playback of your Milestone 312 Ace through the internal speaker, you
can connect any headphones with a 3.5 mm jack on the bottom right of the device. The output is
then switched from speakers to headphones. Please note that your Milestone 312 Ace has two
independent volume levels - one for the internal speakers and one for the headphones.
2.2.4 USB connection to computer
To connect your Milestone 312 Ace to a computer, you can use the supplied USB cable. Connect
the cable end with the small mini-USB plug to the mini-USB port on the top of your milestone.
The end with the somewhat larger USB plug will fit into any traditional USB port on the computer.
Your Milestone confirms a successful connection with the message "Connection activated" and
appears as an external drive named "M312ACE" on your computer. Now you can manage the
files and folders on both devices, replace, rename, delete or copy. Even with large amounts of